In the comments, Noah responds to my complaints that physicists haven't done any better than social scientists at delivering the impossible:
Whine whine whine.
Your teleporter and your faster-than-light starship are too expensive. Your time machine was always impossible, we told you that.
As for your antigravity device, we're working on it, but you wouldn't want to use it because it would cause you to be flung out of the Earth's orbit.
Come on, man, we gave you lasers, pain rays, moon rockets, flying cars (if the govt. would let you buy one), jet packs, and absurdly good data storage, not to mention the aforementioned city-vaporizing asskickery. WHAT MORE DO YOU WANT???